Move version added notes into the index table
diff --git a/Doc/library/collections.rst b/Doc/library/collections.rst
index 6433cd2..d5ad482 100644
--- a/Doc/library/collections.rst
+++ b/Doc/library/collections.rst
@@ -19,25 +19,13 @@
Python's general purpose built-in containers, :class:`dict`, :class:`list`,
:class:`set`, and :class:`tuple`.
-===================== ====================================================================
-:func:`namedtuple` factory function for creating tuple subclasses with named fields
-:class:`deque` list-like container with fast appends and pops on either end
-:class:`Counter` dict subclass for counting hashable objects
-:class:`OrderedDict` dict subclass that remembers the order entries were added
-:class:`defaultdict` dict subclass that calls a factory function to supply missing values
-===================== ====================================================================
-
-.. versionchanged:: 2.4
- Added :class:`deque`.
-
-.. versionchanged:: 2.5
- Added :class:`defaultdict`.
-
-.. versionchanged:: 2.6
- Added :func:`namedtuple` and added abstract base classes.
-
-.. versionchanged:: 2.7
- Added :class:`Counter` and :class:`OrderedDict`.
+===================== ==================================================================== ===========================
+:func:`namedtuple` factory function for creating tuple subclasses with named fields .. versionadded:: 2.6
+:class:`deque` list-like container with fast appends and pops on either end .. versionadded:: 2.4
+:class:`Counter` dict subclass for counting hashable objects .. versionadded:: 2.7
+:class:`OrderedDict` dict subclass that remembers the order entries were added .. versionadded:: 2.7
+:class:`defaultdict` dict subclass that calls a factory function to supply missing values .. versionadded:: 2.5
+===================== ==================================================================== ===========================
In addition to containers, the collections module provides some ABCs
(abstract base classes) that can be used to test whether a class